Gas generator for oil burners



' N. JLVEHRET.

GAS GENERATOR FOR OIL BURN'ERS.

APPLICATION FILED MAY 25, 1921. 7 PatentedJune 6,1922.

2 SHEETS-SHEET l.

.Jfbiwlas J 76rd.

,Anronuevs.

N. J. VEHRE T. GAS GENERATOR FOR 0H. BURNERS.

APPLICATION FILED MA Y25, 192i. 1,418,407.

Patented June 6, 1922,

2 SHEETSSHEET 2- M02616 J 75rd.

INVENTOR wire TBS iv roiionns I. vnarln rr, or MEMPHIS, trnnnnssnn.

rice.

ears GENERATOR son on enemies.

' Application filed May 25,

T oaZZ to 720m it mag concern Be it known that I, Nio o AsJ. Vnn n'n'a citizen of the United States, residing-at Memphis, in the county of Shelby .and State of Tennessee, have invented a Gas Generator for Oil Burners, of which the following is a full and complete specification. I

The primary object of my invention is to provide a generator. or gas producer for Oll burners which is simple, cheap and compact in construction for use in connection with different :types of burners, being in the present instance a separate device or appliance that is independent of and away from the burner so that it will not bjeafiectedby the main heating flame; whereby the durability of the generator is materially increased and in operation it is more effective.

A further-object of my invention is to so construct the generator or gas producer that when applied it is easily accessible for con- ,venience in manipulation .to start upthe Oll burner, its operation clearly visible for observation, and the several .parts constituting the appliance arranged for convenient examinatlon and repair. v e v I A further object of my invention is-to provide a gas generating device of this general character that is not liable to get out of order and in the useoperates safely and economically to producea supply of gas that will increase the effectiveness of any particular typeof gas-burner that may be used in connection' therewith.

Other objects and advantages ofmy invention will hereinafter-appear in the following s ecification, and what I claim as new and cesire to protect by Letters-Patent par.- ticularly set forth in the-appended claims.

In the accompanying drawings, forming a part hereof:'

Fig. lisa side elevation of a generator or gas producer constructed in accordance with my invention.

Fig. 2' is a plan view of the same.

Fig. 3 is a longitudinal vertical sectional view through the parts. I

Fig. 4 is a: plan view illustrating the application of the gas generator to a burner of particular construction. a I

Figs. 5 and-6 show manifold gas burner sections assembled to produce a large burner.

Fig. 7is a perspective view of-a" gas burner tip; and

Figs. 8. and 9 are-detail views of modified forms of couplings used in connection wi h 1921. Serial No. 472,469.

the gas generator and hereinafter referred to. i a v In carrying out my invention 1 make the retort 10 in the form of a coil which is heated 13, at opposite sides thereof; the auxiliary 1 burner being connected to the rear portion of the mixing-chamber to receive =1ts supply of fuel gas therefrom, anda sultable connection, as nipple 14, provided for connecting the gas generator to the burner.

Specification of Letters Patent.

In constructing the device Ieniplo-y for the mixing-chamber a pipe 12 of suitable s1ze accordlng to -the-"requ1re,d heating capacity of the burner or number of burners with which the generator is to be usedfand attach to the forwardend of this pipe a cap .15 having'the air inlet pipes 13, l8, threaded into openings at opposite, sides thereof, the outer end'of said cap being provided with :a small opening 16 to' receive the'nozzle .17 of a conventional form of needle'walve '18 through the medium of which the vaporized oil from the retort l'O'is injected-into the aforesaid mixlng-chamber -or ga'spipe 12.

One-end ofthe retort-coil is connected to this i needle-valve by means of a gland-nut 1'9, and the other end of said coil or an extension 1O thereof, is connected hya gland-nut 20to an ordinary form of cut-oil or regulating valve 21 interposedbetweenthe coilandoil supply a pipe 22. The regulating valve is provided with a manipulating wheel 21*. and with an attaching plate 21 by which latter is' it secured to a suitable support.

, The needle-valve 18 is connected to the cap of the mixin -chamber by slipping the plain nozzle-17 thereof into the hole 16- in said cap, and ofcourse either one or both the hole and nozzle may be slightly tapered for more securely holding the needle-valve in place by frictional engagement. This connection provides for readlly removing the needle-valve for examining and clean-.

ing the same, as well as repairing or renewingany-of the parts of the generator. It

will be here noted thatair is admitted to the mixing-chamber at opposite sides @of thedischargeend of the needle-valve sothat' the inflammable gaswill be formed in the pipe 12 after the manner of a Bunsen burner and superheated by the auxiliary burner to produce a better flame at the main burner. It will be also noted that the stream oi vaporized oil discharged from the needle-valve into the mixing-chamber or gas pipe 12 can be observed through either one of the air inlet pipes 13, whereby the character of the stream or spray can be readily seen and therefore more accurately regulated by manipulation of the needle-valve. Theair in let pipes are of a suliicient length to take in a fresh supply of air beyond that heated. by the auxiliary burner, and of course the size of these pipes is governed by thesize of the co-operating parts of the gas generatm'.

The mixing-chamber or gas pipe 12 is supported at its rear end by a T-coupling 23 through which the mixture or gas passes to the burner by way of a suitable connection, as for instance the nipple 14, and this coupling also supports the auxiliary burner 11 so that a small part of the gas mixture from the mixing chamber maybe drawn to supply said auxiliary burner; but as the burner-pipe is comparatively small'the T- coupling is either provided with a reduced opening for connection of this pipe thereto or with a reducing plug 24L. As the auxiliary burner pipe is located below and substantially parallel with the mixing-chamber or gas pipe 12 an elbow coupling 25 forms a part of the connection with the T-coupling. As shown in Figs. 1-3 of the drawings the mixing-chamber is connected to one end of the straight portion of the T-coupling and the nipple 14. to the other end thereof, while the. auxiliary burner is connected to the opening in the coupling at right angles to saidstraight portion or direct passage and being comparatively small draws only a small quantity of the fuel gas to supply the same for heating the retort and mixingchamber. This form of Tcoupling is employed in connecting the gas generator on a line with the main burner; but it will be understood that other forms of couplings may be used when the main burner is to be located above or below the gas generator, as for instance the couplings shown in Figs. 8 and 9, hereinafter described. In, each, instance, as will be observed, the several parts of the gas generator are supported from the coupling device, the general arrangement be- .ing to provlde a simple and compact appliance.

The generator or gas producer hereinbe fore described may be used in supplying any type of gas burner and is easily connected through the medium ofthe nipple 14 or other pipe connection according to the desired location of the main burner with respect to the generator.

In Fig. 4 of the drawings I have illustrated a particular type of main-burnerto be used in connection with the improved gas generator, for in this instance the body of the burner is U-shape to be used alone in providing a small single burner or in pairs to provide a larger burner, comprising the member 26 having the burner-openings 26 into which are threaded tips 27' shown in Fig. 7. In connection with this burner member I prefer to use a cooperating burner-member 28 to provide a manifold main burner in which the said burnerinembers or sections are susceptible of arrangement in organizingburners of various sizes, for instance an intermediate size, as shown in Fig. 5, or a larger size, as'shown in Fig. 6. The burner-member 28 is provided with openings 28 threaded to receive the tips 27. Each burnenmemb'er carries an independent generator or gas producer of the construction 'hereinbefore described thereby forming a heating unit for use singly, in pairs, or in groups, to provide heating capacity according to any special requirement and a large range of uses from the small requirements in household heating and cooking to the larger requirements necessary in furnishing burners for baker- I ies, restaurants, hotels, laundries and other business places or establishments; it being understood that groups of heating units of this character may be used in stoves and furnaces for heating buildings, in ranges for cooking, and in other kinds of heating apparatus and appliances for various purposes Although the burner-inembers 26 and 28 provide a special. form of manifold burner'it will be obvious that the generator or gas producer hereinbefore described may be used to advantage with any "other type oi" main, burner adapted to use natural or artificial gas by connecting the same to the usual supply pipe. In every instance the use of the generator with either gasoline orzkerosene results in producing a fuel mixture or gas that is vaporized and superheated independent of the main. burner and. therefore its quality or richness more accurately regulated.

In Fig. 8 I have shown one modification of the coupling which supports the several parts of the gas generator, in which instance the T-coupling 29 provides for dire cting the gas mixture from the mixing chamber or gas-pipe 12in an upward direction so as to connect with a burner located. at I the larger passageway and connecting open- .ings and 33-to which the gas pipe 12 and nipple 30 are respectively connectedat right angles to each other, with the reducing portion 340i the coupling extending downward to receive the auxiliary burner.

YVhen it is desired to locate the main burner generator may be renewed also at small exr pense. i

From the foregoing description it will be readily seen that my invention in the present instance resides primarily in the provision of a generator or gas producer for use in connection with any form of main burner, and presents a practicable device or appliance in which a coiled retort is heated by an independentburner to vaporize the oil and that this auxiliary burner also superheats the gas-mixture to produce an effec-r tive flame at the main burner. Furthermore that the particular arrangement of the comparatively few parts in compact and cooperative relation away from the main burner not only increases the life or durability of the generator but also increases its effectiveness in operation and ease of manipulation. as well as making it possible for repairs to be readily and conveniently made by an unskilled person.

I claim v 1. A. generator or gas producer for oil burners comprising a mixing-chamber to which the main burner'is connected, an auxiliary burner pipe located below and adjacent to said mixing chamber for heating the same, said auxiliary burner pipe being connected to the mixing-chamber to receive fuel gas therefrom, a retort around the auxiliary burner pipe, a valve receiving the vaporized oil from the retort and discharging it into the mixing-chamber, and air inlets to the mixing-chamber.

2. A- generator or gas producer for oil burners comprising a mixing-chan'iber to which the main burner is connected an auxiliary burner-pipe located below and adjacent to said mixlng chamber for heating the same and connected to the mixing-chamber to receive its fuel gas therefrom, a coiled retort around the burner-pipe, a valve receiving the vaporized oil from the retort and discharging it into the mixing-chamber, and air inlets to the latter.

A generator or gas producer for oil burners comprising a mixing-chamber to which the main burner is connected, an auxiliary burner-pipe located below and adjacent to said mixing-chamber for heating the same and connected thereto to receive its fuel gas therefrom, a coiled retort around the burner-pipe, a valve receiving the vaporforth.

connected to the mixing chamber at oppo site sides of the dischargeendof th aforesaid valve and projecting away from said mixing chamber, substantially as shown and described.- 1

4. A generator or gas producer for oil burners comprising a mixing-chamber to which the main burner is connected, an auxiliary burner-pipe located below and aphacent to said mixing-chamber for heating the same, a coupling connected to'the rear end of the mixing-chamber and having a reduced opening to which the burner-pipe is connected, a coiled retort around the aux-- iliary burner pipe, and a valve receiving the vaporized oil from the retort and discharging it into the mixingchamber, substantially as shown and for the purpose set 5. A generator or gas producer for oil burners comprising a mixing-chamber to which the main burner is connected, an auxiliary burner-pipe located below and adja cent to said mixing-chamber for heating the same, .a coupling connected to the rear end of the mixing-chamber and having a reduced opening to which the auxiliary burner-pipe is connected, a coiled retort around the auxiliary burner-pipe, a valve receiving the vaporized oil from the retort and discharging it into the mixing-chamber, and inlet pipes projecting laterally from the forward end ofthe retort at opposite sides of the discharge end of the aforesaid valve, substantially as shown and for the purpose set forth.

6. A. generator or gas producer for oil burners comprising a mixing chamber to which the main burner is connected, a cap at the forward end of the mixing-chamber having threaded openings at opposite sides and a hole in its rear wall, and a reducing coupling at the rear' end of said mixing chamber, for connecting it to the main burner and for connecting an auxiliary burnenpipe thereto; together with an auxiliary burner pipe connected to the coupling, a coiled retort around-the auxiliary burner-pipe, a needle-valve receiving the.

vaporized oil from the retort and fitted into the hole in the end wallof the cap on the mixing-chamber, and pipes threaded in the opposite openings in said cap to project away from the mixingchamber, said pipes being on a line with the'discharge end of the needle-valve, substantially as shown and for the purpose set forth.

7 A heating unit for burning oil compris-' ing a U-shape main burner, a mixingchamber connected thereto, an auxiliary burner-pipe connected to the rear end of the mixing-chamber and located below the latter, a coiled retort around said auxiliary &

burner-pipe, a needle-valve receiving the vaporized 01] from the retort'and d1scharging it into the forward end of the mixingchamher, and inlet pipes: at opposite sides of the mixing-chamber on a line with the discharge end of the needle-valve, substantiaily as shown and for the purpose set forth.

8. A manifold oil. burner comprising a U- 10 shaped section and a T-shape section each carrying a mixing-chamber, an auxiliary burner-pipe connected to Said mixing-chamher, a coiled retort around the auxiliary hurner pipe, a needle-valve rereiving the vaporized oil from the retort and discharging it into the rnixing-chamber and air inlets on a line With the discharge end of said needle-valve.

NICHOLAS J. VERRET. 

